SQL | Setting criteria using WHERE exercise | Combine criteria to show possibly watery post-1970 events!

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The answer to the exercise will be included and explained if you attend one of more of the courses listed below!

Software ==> SQL  (198 exercises)
Version ==> Any version of SQL Server
Topic ==> Setting criteria using WHERE  (5 exercises)
Level ==> Harder than average
Courses ==> Introduction to SQL  /  Fast-track SQL
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First show a list of all events which might have something to do water.  The Wise Owl interpretation of this is that one or more of the following is true:

  • They take place in one of the island countries (8, 22, 30 and 35, corresponding to Japan, the Marshall Islands, Cuba and Sri Lanka respectively)
  • Their EventDetails column contains the word Water (not the text Water, but the word)
  • Their category is number 4 (Natural World)

This should return 11 rows.  Now add a criterion to show only those events which happened since 1970 (you may need to use parentheses to get this to give the correct answer).

Here's what you should see as a result:

The results

The final results from running this complicated query.

Save this as Somewhat contrived, then close it down.

This page has 6 threads Add post
Onette   Reply to OnetteReply
22 Feb 20 at 13:19

Select EventName, EventDetails, EventDate
From  tblEvent
Where (CategoryID = 4 or CountryID in (8,22,30,35) or lower (EventDetails) like '%water %') 
and Year(EventDate)>1970   ---- the year is extracted with function YEAR() 
 

Priyanshu   Reply to PriyanshuReply
22 Dec 19 at 20:36

SELECT EventName, EventDetails, EventDate
FROM tblEvent
WHERE (CategoryID = 4 OR CountryID IN (8,22,30,35) OR EventDetails LIKE '% WATER %')
AND DATEPART(YEAR, EventDate) > 1970;

AceAxe   Reply to AceAxeReply
24 Jun 19 at 09:57

These exercises are fascinating!

rasheedshd   Reply to rasheedshdReply
24 Sep 18 at 21:17

I am not able to rin this, can anybody help.

select EventName, eventdetails, EventDate
from tblEvent
where CountryID  in (8,22,30,35)
or eventdetails  like '%water%' or
CategoryID = 4
and eventdate > 1970-01-01 

I am getting this error message:

Operand type clash: date is incompatible with int

 

Andrew G   Reply to Andrew GReply
25 Sep 18 at 07:31

Hi, try writing the date within a set of single quotes, like this:

'1970-01-01'

I hope that helps!

Kareem44   Reply to Kareem44Reply
07 Sep 17 at 10:03

cannot solve it

select EventName, EventDetails, EventDate from tblEvent where  (CountryID = 8 or CountryID = 22 or CountryID = 30 or CountryID = 35) or EventDetails = '%water%' or CategoryID = 4 and year(EventDate) >= 1970

Andy B   Reply to Andy BReply
07 Sep 17 at 16:47

You need to put LIKE and not =:

EventDetails LIKE '%water%'

This will show rows where the event details match the pattern contained in the text string.

eric   Reply to ericReply
05 Nov 17 at 07:27

Hi

Correct answer is:

EventDetails like '% water %'  

with spaces around.  You are looking for the word water , not any text with water in it.

Full query:

select * from tblEvent
where (CountryID in(8,22,30,35) or
EventDetails like '% water %' or
CategoryID = 4) and EventDate > '1970-01-01'

piresmdb   Reply to piresmdbReply
18 Jul 17 at 09:55

Combine criteria to show possibly watery post-1970 events!

Thee are only 4 events under the CategoryID 4. How come you have five in your solution?

Andrew G   Reply to Andrew GReply
30 Jul 17 at 10:02

The clue is in the question!

"one OR more of the following is true"

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